Traction-engine



2 Sheets-Sheet 1.(

(No Model.)

` B. YOCH.

TRAUTION ENGINE.

(No Model.) 2 Sheets-Sheet 2.

B. YOGH.

TRAGTION ENGINE.

No. 269,496. sented 1360.19, 1882.

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UNITED STATES BENHARD YOCH, OF ST. LOUIS, MISSOURI.

TRACTlON-ENGINE.

SPECIFICATION forming part of Letters Patent No. 269,496, dated December19, 1885?.

(No model To all whom it may concern:

Be it known that I, BENHARD YocH, ofthe city of St. Louis, inthe Stateof Missouri, have invented certain new and usef'ul Improvement-s `inTraction and Portable Engines, of which the following is aspecitication, reference heilig had to the accompanying drawings,forming part of the same.

My improvement relates to a portable engine for driving machinery, andwhich has capacity in itself for moving from place to place and for useas a traction-engine.

The tirst part of my improvement consists in making the body oftheengine adjustable vertically upon the axle of the main wheels, and

placing upon the crank-shaft friction-wheelsV that may be brought incontact with the main supporting-wheels to turn them.

My improvement also consists in the insertion of a cushion between thesewheels and the crank-shaft, and driving the wheels by means of acrank-and-link connection with the shaft, so as to allow the compressionof the cushion.

My improvement also consists in the described means i'or adjusting theposition of the crank-shaft.

My improvement also consists in combining withthe crank-shaft a windlassand cog-gear, by which the engine may be used when at rest to drawforward a wagon or other object, and the described means forthrowing-the same in and out ofgear.

In the drawings, Figure lis a side elevation of the engine, with the twonear wheels removed and their axles shown in section. The drive-pulleyis also removed. Fig. 2 is a perspective view ofone of the pulleys ofthe steering-chain, and Fig; 3 is a similar view of the otherchain-pulley. Fig. 4 is an enlarged detail illustrating the arrangementof lever by which the windlassclutch mechanism is operated. Fig. 5 is arear elevation of the engine. Fig. 6 is a front elevation of the engine.Fig. 7 is a side elevation of one of the frictionwheels. Fig. 8 is adiametric section at 8 8, Fig. 7. Fig. 9 shows one of thefriction-wheels, part in face view and part in section. Figs.

10 and 11 are detail views, showi-ngt-he ratchet device for raising andlowering the crankshaft and friction-wheels.

The main ground-wheels are shown at A and the steering-wheels at B.

C is the boiler, which forms the body of the engine.

D is the axle ot" the wheels A. The axle is vertically adjustable inguide-brackets E', attached to the sides ofthe boiler. The axle 1) issecured in the brackets by means of guideblocks F, through which theaxle passes, and which slide in the brackets.

G is a jack-screw which worksin the bracket, and whose lower end bearsupon the blockF, so that when the jack-screw is turned down in thebracket it raises the boiler and all parts that are fastened rigidly toit. turned by means 'of a ratchet-lever, H, whose ratchet-pawls I and Jengage two sets of ratchet-teeth upon the screw. One pawl, I, and itsteeth I act to cause the downward movement of the screw, and the pawl Jand its ratchetteeth J' act to tuin the screw upward.. The pawls I and Jare upon a single rockshaft,1{, having a toe, L, engaged by a spring, M,which acts to hold whichever of the pawls may be in use against itsratchctteeth, and at the same time to hold the other paw] out of contactwith its proper teeth.

The engine-cyliiiders and their valve-chests are shown at N.

O are the connecting-rods, engaging cranks on the crank-shat'tl. Thecrank-shaft has bearing in the frame E. Upon the crankshat't P arefriction-wheels It-one over each ot' the main wheels A. The constructionis such that when the wheels R are in their lower position they bearupon the main wheels A, and, when the crank-shaft turns, cause therotation ot' the main wheels and the movement ot' the engine over theground. The friction-wheels are cushioned upon the shaft by india-rubberbushingR, so as to form a spring between the pulley or wheel R and theshaft, and so between the main n heel and the frame E. The wheel iscoupled to the shaft, so as to cause its rotation therewith, by a link,S, connected by pintles at the ends to the wheel, and a crankarm, S',fixed to the shaft. This connection will allowfree movement of thepulley in the compression ofthe spring-cushion R'.

T are eccentrics upon the crank-shaft by which the slide valves T areoperated.

U is a spur-wheel upon the crank-shaft, that may be made to engage aspur-wheel, V, upon a windlass-drnm, 7. The drum W turns free,

The screw is' and has also endwise movement on an arbor, X, xed to theframe E in a position parallel to the crank-shaft. The drinn is forreception cfa cable that is coiled thereon, and which extends from thedrum, first over a grooved pulley, Y,.and then under a grooved pulley,Z, and then to any object it may be desired to draw towaid. the engine.The pulleys Y and Z turn free on the arbors a, and have endwise movementthereon to accommodate themselves to the position of the cable upon thedrum. The drum has capacity for endwise movement upon the arbor X tobring the spur-wheel V into engagement with the spur-wheel U and toallow its disengagement. The endwise movement ofthe drum upon the arborX is caused by a hand-lever, b, having a stud, b', entering acircumti'rcntial channel in a wheel, c, vthat is fixed to one end of thedrum.

d is the brake, operated by connection to a brake-lever, e.

fis the steam-pipe, and g the exhaust-pipe, the latter extending througha feed-water heater. h, to the chimney t'.

The fore end of the boiler is supported on the wheels B by means ot'atfth-\vheel,j, the axle h turning on the fifth-wheel to guide themachine. The axle is turned by means ot two chains, l, f1xcd at one end,l, to the bottom of' the boiler, and passing through pulley-blocks mnear the ends of the axle, and back to a Windlass, a, turned by aWorm-gear, 0, operated by a hand-wheel, p. The ends of the chain arecoiled around the windlass in op- .posite directions, so that as one endis coiled up the other end is uncoiled. It will be seen that the WholeWeight ofthe heavy end of the boiler may be brought. upon the wheels Rwhen the engine is moved from place to place, and that the rubbercushions will act to prevent jars being communicated from thegroundwheels to the engine. Thus a considerable amount of frictionalpower may be 'applied to the ground-Wheels without injurious shaking ofthe working parts.

P is a belt-pulley by which motion may be communicated to any machinerythrough medium of a belt thereon.

I claim as my invention- 1. A portable or road engine havingits rearportion vertically adjustable to adapt it to be supported either on theaxle of or on the top ofthe main wheels, as set forth.

2. In a portable or road engine, the frame E, vertically' adjustable onthe main wheels to support the rear portion of the engine either on theaxle of or on the top of the main Wheels, as set forth.

3. The combination, with the wheels Rand A, and l'rame E, and axle D, ofthe jack-screws G, turning in the frame and bearing upon the slidingaxle-bearing,r F, substantially as and for the purpose set forth.

4. The combination, with frame E, main wheels A, and axles D, ot' thelevers H, each having rock-shaft K, provided with pawls I and J, toe L,and spring M, the jack-screw (l, and ratchet-collars l and J', the saidlevers adapted to raise and lower the jack-screws by the engagement ofthe pawls with the ratchetcollars, as set torth.

llhe combination, in a portable or road engine, of the enginecrank-shaft, spur-wheel U thereon, arbor X, Windlass \V, having rotaryand endwise movement on the arbor, spur- Wheel V'on the Windlass, arborsor rods af, and pulleys Y Z on the said arbors yor rods, substantiallyas and for the purpose set forth.

6. The combination, with tbe shaft P and the friction-wheel It, oftherubber cushion R', and crank S', and link S, substantially as and forthe purpose set forth.

7. The combination of a driving or driven shaft, and a wheel or pulleythereon, a cushion'interposed between the shaft and Wheel, and adrivingfconnection between 'the shaft and wheel, allowing thecompression of the cushion.

BEN HARD YOGLL XVitnesses:

SAML. KlvGHr, Gao. H. KNIGHT.

